74 lines
1.9 KiB
Bash
74 lines
1.9 KiB
Bash
#!/bin/bash
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#
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# Process Terminator Script for Linux
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# This script forcibly terminates a process and all its child processes
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#
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# Check if PID argument is provided
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if [ $# -ne 1 ]; then
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echo "Usage: $0 <PID>"
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exit 1
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fi
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PID=$1
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# Validate that input is a valid PID (numeric)
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if ! [[ "$PID" =~ ^[0-9]+$ ]]; then
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echo "Error: The PID must be a numeric value"
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exit 1
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fi
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# Check if the process exists
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if ! ps -p $PID > /dev/null; then
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echo "Warning: No process found with PID $PID"
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exit 0
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fi
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# Recursive function to find and kill all child processes
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kill_children() {
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local parent=$1
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local children=$(ps -o pid --no-headers --ppid "$parent")
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# Output information about processes being terminated
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echo "Processing children of PID: $parent..."
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# Process each child
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for child in $children; do
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# Recursively find and kill child's children first
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kill_children "$child"
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# Force kill the child process
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echo "Terminating child process: $child"
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kill -9 "$child" 2>/dev/null || true
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done
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}
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echo "============================================"
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echo "Starting termination of process $PID and all its children"
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echo "============================================"
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# Try graceful termination first
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echo "Attempting graceful termination (SIGTERM) of PID: $PID"
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kill -15 "$PID" 2>/dev/null || true
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sleep 1
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# If still running, fall back to kill_children
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if ps -p $PID > /dev/null; then
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echo "Process $PID did not exit after SIGTERM; proceeding with forced termination of its children and itself"
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else
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echo "Process $PID exited cleanly after SIGTERM"
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exit 0
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fi
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# Find and kill all child processes
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kill_children "$PID"
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# Finally kill the main process
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echo "Terminating main process: $PID"
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kill -9 "$PID" 2>/dev/null || true
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echo "============================================"
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echo "Process $PID and all its children have been terminated"
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echo "============================================"
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exit 0
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